Feed device for hydrocarbon-burners.



unrrnn STATES PATENT OFFICE.

ANDERS AKESON, OF WORCESTER, MASSACHUSETTS.

FEED DEVICE FOR HYDROCARBON-BURNERS.

Specification of. Letters Patent.

Patented March 31, 1908.

Application filed June 14, 1907. Serial No. 379,073.

To all whom it may concern:

Be it known that I, ANDEns AKEsoN, a citizen of the United States,residing at the city of Worcester, county of Worcester, and State ofMassachusetts, have invented certain new and useful Improvements in FeedDevices for I-lydrocarbon-Burners, of which the following is aspecification.

My invention relates to hydrocarbon burners for heating and otherpurposes, and it consists of the novel construction, combina tion andarrangement of parts, as hereinafter described and claimed.

The object of my invention is to improve the feed (flevicesforsupplyingliquid fuels to the vaporizing chamber of such burners, drop by drop, bygravity.

In the accompanying drawings like reference numerals indicate likeparts.

Figure 1 is a central vertical section of my improved feed device for ahydrocarbon burner. Fig. 2 is an enlarged view in perspective of thedropper or discharging end of one of the needle valve tubes or cases,constituting one feature of my invention, and, Fig. 3 is a centralvertical section of a modified form of the feed device for hydrocarbonliquids.

My invention is a modified form of the feeding device shown anddescribed in my ending application for Letters-Patent of the nitedStates, filed June 1.1, 1907, Serial No. 378,460.

A feed tube 1 is internally threaded at its upper end and has twoangularly inclined bosses 2 and 3, each tapped with a screwthread, asshown in Fig. 1. The upper end of the tube 1 is closed by a plug 4,having a screw-threaded central aperture at its upper end, and anannular shoulder or flange 5 of smaller diameter at its lower end, whichis adapted to enter and engage with the upper end of the tube 1.

A valve tube or cylindrical valve case 6, by means of an exteriorscrew-thread, engages the central aperture of the plug 4, and has aflange 7, which is in snug contact with the upper surface of said plug.It also has the branch or tube 8 extending therefrom on one side. Aneedle valve 9 is operated by a handle or wheel 10, and moves spirallyin the valve tube or case 6 by means of a screwthread on the shank ofsaid valve, which envalve 20 passes rotatably.

gages with a threaded portion of the bore of said tube or case, whichportion of the bore is slightly reduced in diameter.

The lower end of the valve tube or case 6 has its bore conically reducedto a very small diameter, as seen in Fig. 1, and so furnishes a valveseat for the conical end of the needle valve when the latter is closed.The upper end of the valve tube or case 6 has an exterior screw-thread,upon which a screw-threaded cap 11 fits, the latter being made with acentral aperture or bore, through which the shank of the needle valve 9asses rotatably.

A pipe 12 is secured wit in the tubular projection or boss 8 of thevalve case or tube 9. Apipe 13 conducts alcohol from a tank orreservoir, not shown. A valve 14 is located betweenthe contiguous endsof the pipes 12 and 13, and is operated by awheel15. A valve tube orcase 16 has an exterior. screw-thread 17, by which it is secured inosition in the threaded boss 3. The valve tube or case 16 has a flange18 in contact with the outer end of the boss 3., It also has a tube orbranch 19 on its upper side. It is screw-threaded in a portion of itsbore, which is there somewhat reduced in diameter. A needle valve 20 ismounted in the valve tube or case 16, and has a portion of its shankscrew-threaded to engage with the threaded portion of said bore, as seenin Fig. 1.. The-outer end of the valve tube or case 16 is exteriorlythreaded and a threaded screw cap 21 engages therewith to close theouter end of the valve tube or case.

The screw cap 21 has a central aperture or bore through which the shankof the needle The needle valve 20 is operated by a hand wheel 22. Thelower portion of the bore of the valve tube or case 16 is reducedconically, as shown in Fig. 1, to have a very small diameter, and sofurnishes a valve seat for the conical end of the needle valve. 20, whenthe latter is closed. The valve tube or case 16 terminates in a grooved,downwardly extending lip or dropper, which is hereinafter more fullydescribed.

A pipe 23 is fitted in the tubular boss or branch 19 and is connected byan elbow 24 with a pipe 25. A pipe 26 conducts kerosene from a tank orreservoir, not shown. A

valve 27 connects the contiguous ends of the pipes 25 and 26 and isoperated by the hand wheel 28. A similarly constructed needle valve 29,valve tube or case 30 having a flange 31, a tubular boss 32, and screwcap 33, is mounted and supported in the threaded boss 2 of the feedtube 1. The needle valve 29 is operated by the hand wheel 34.

A pipe 35 fits in the tubular boss 32 and is connected by an elbow 36 toa pipe 37. A pipe 38 conducts water from a tank or reservoir, not shown.A valve 39 connects the contiguous ends of the pipes 37 and 38 and isoperated by the hand wheel 40.

The feed tube 1 has an air inlet 41, substantially in line with thedischarging end of the valve tube 6, and the arrows 42 indicate aircurrents entering the tube 1 through said inlet. Said tube 1 also has anair inlet 43, substantially in line with the discharging ends of thevalve tubes or cases 16 and 30, and the arrow 44 indicates the aircurrent entering the feed tube 1 through the inlet 43. The vaporizingtube or chamber 45 is shown only in its upper portion, which receivesthe lower end of the feed tube 1.

A characteristic feature of my invention is the elongated, grooved lipor projection 46, which may be called the dropper. This is shown in Fig.1 in elevation on the left hand and in central longitudinal section onthe right hand of said figure, and also in perspective on an enlargedscale in Fig. 2. The valve tube or case (designated as 16 in Fig. 1) hasthe screw-threads 17 and the convex end 47, from the outer portion ofwhich latter is an integral tubular projection 48. The dropper 46extends integrally from the projection 48 at one side and is directed atan angle downwardly. It has a longitudinal groove 49, semi-circular incross-section. The groove 49 is continuous with the bore of the tubularprojection 48 and with the bore of the valve tube or case. The angle ofthe dropper 46, in relation to the projection 48, is such that thegrooved face of the dropper 46, when the whole device has been assembledand is set in a perpendicular direction, is vertical, as shown in Figs.1 and 3. The fluid contents of the valve tube or case flow out along thechannel or groove 49 and drip from the lower end. of the dropper 46, asillustrated in the drawings.

The operation of the said improved feeding device is as follows: When ablaze has been started in the combustion chamber (not shown), which isat the bottom of the vaporizing tube or chamber 45, the air of theexternal atmos here rushes in through the air inlets 41 anc 43 of thefeed tube 1, as indicated by the arrows 42 and 44, thus pro ducing astrong down draft through the Vaporizing tube or chamber 45, as is wellunderstood in this art without further explanation. Alcohol is first fedin by turning the valve wheel 15 and the same is dischar ed through thevalve 6, by operating the Va ve wheel 10 to withdraw the end of theneedle 9 from its seat. Thus alcohol is reduced more or less to spray bymeans of the air currents through the inlet 41, indicated by the arrows42. Kerosene is -then admitted to the valve tube or case 16 by turningthe valve wheel 28. The valve wheel 22 is then operated and the needlevalve 20 is unseat ed, whereupon the kerosene flows into the channel orgroove 49 of the dropper 46, and falls from the end of the latter in asuccession of drops, as illustrated in Fig. 1, which descend along thefeed tube 1. Similarly, the o eration of the valve wheel 40 and of theva ve wheel 34 causes water to pass through the valve 30 and to bedischarged in drops into the feed tube 1. The droppers of the valvecases 16 and 30 are located adjacent to the air inlet 43, through whichthe air is rushing in a strong downward draft, as indicated by the arrow44. The air currents coming in at the inlets 41 and 43 dissipate thedrops of kerosene and of water and subdivide them into smaller globulesor masses of spray, which are mingled in the vaporizing tube or chamber45, and pass into the combustion chamber (not shown), where the oilbecomes a vapor that may be readily ignited.

In Fig. 3 is shown a modified form of my said improved feeding device. AT-shaped union or pipe 50 supports at one upper end an alcohol feed pipe51, and at the other upper end a water feed pipe 52, and at the lowerend a discharge pipe 53. An oil tank 54 receives a kerosene feed pipe55, and has two discharge pipes 56, 57. Said tank has a cover 58,provided with a central orifice, through which the discharge pipe 53passes, and the pipe 53 also passes through the bottom of the tank 54. Acombined airdrum and mixing chamber 59 has air inlets 60, 61, and isprovided on its upper side with a central opening, through which openingthe discharge pipes 53, 56, and 57 pass, the lower end of the pipe 53extending a little below the lower ends of the pipes 56 and 57. Theair-drum or mixing chamber 59 has a central aperture and collar 62 atthe bottom, and the upper end of the vaporizing tube or chamber 63 isheld by the collar 62, as illustrated in Fig. 3. It is thus seen thatthe fluids discharged into the chamber 59 from the pipes 53, 56 and 57,are immediately subj ected to and broken up by the strong downward aircurrents through the air inlets 60, 61,.as indicated by the arrows 64,and so are vaporized in the upper portion of the tube or chamber 63.

I claim as a novel and useful invention and desire to secure byLetters-Patent:-

In a feed device for a hydrocarbon burner, the combination of avaporizing chamber a feed tube communicating with said chamber ing anozzle which terminates in a radially and provided with air inlets; aneedle valve disposed dropping point capable of dischargadapted todischarge alcohol into said tube; ing the liquid from said valve indrops by a needle valve adapted to discharge water gravity. I 5 intosaid tube, and said latter valve having In testimony whereof I aflix mysignature 15 i a nozzle which terminates in a radially disin presence oftwo witnesses.

posed dropping point capable of discharging ANDERS AKESON. the liquidfrom said valve in drops by grav- Witnesses: ity; and a needle valveadapted to discharge HENRY P. RYDER,

10 kerosene into said tube, and said valve hav- CHARLES F. HUNTER.

